
Looks like a great concept for bleeding or changing brake fluid. It fits my two Mercedes and BMW cars. As a seasoned auto mechanic with over 36 years of experience, I can't pay $950 for a B1 service at my local Mercedes dealership that includes an engine oil and filter change. Change brake fluid and cabin filter. Oh yes, you get free coffee and cookies, a bottle of cold water, and a "free" car wash. So I bought an engine oil drain and this little Revain brake pressure bleeder valve along with genuine Mercedes oil and filter, cabin filter and dealer brake fluid just to keep my original warranty on my new car as it has to be using genuine parts and kept my receipts. The prices for oil, fluids and filters at the dealer double, but because of the guarantee there is no choice. This bleed is great, I just bought a Harbor Freight quick disconnect to make it easier to connect to the master cylinder without twisting the hose. To be honest they should be included in the package apart from being a great product and at the right price. I recommend it to any enthusiast or DIYer.

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